Inside Ukraine's secret counterattack in the Donbass.
In May 2026, Ukraine's Third Army Corps launched a secret counteroffensive, now known as Operation Vivaldi, with the aim of strengthening Ukraine's defensive positions in the Lyman and Sviatohirsk sectors and disrupting Russia's plans to encircle Ukraine's key strongholds - the cities of Slovinsk and Kramatorsk.
In this report, he and the Kyiv Independent's Nick Allard join Ukrainian units involved in the operation to see how they used reconnaissance drones, long-range strikes against Russian logistics and ground attacks to retake territory.